Arbitron announced that its new portable people meter system could successfully track podcasts. "During the week of July 18, Arbitron encoded several podcasts by Clear Channel's WHTZ-FM (Z100) in New York, which were uploaded to the podcast portion of Apple's iTunes Music Store. The Z100 podcasts were then downloaded to an MP3 player and played over headsets using the PPM headset adapter. The PPM detected and recorded the unique identification codes that were embedded in the MP3 file."--Media Post